Multiple-drilling spindle machine



MULTIPLE DRILLING SPINDLE MACHINE May 30, 1933. J. w. BROWN, JR 1,911,301

MULTIPLE DRILLING SPINDLE MACHINE Filedmarch 14, 19:50 3 sheets-sheet 2 E -Fz azwfya ma May 30,v 1933. J. w. BROWN, JR

l MULTIPLE DRILLING SPINDLE MACHINE Filed March 14. 1930 5 Sheets-Sheet 3 Patented May 30, 1933 N N UNITED (sfrAfngs.v

JOHN-WILSON BROWN, Jn., or rmminnilr'nm, '.eninirsYLvnNIA.V

I MULTIPLE-DRILLING SPIDLE v MACHINE Applicationomediaach i4, 1930. [serial No. 435,893.72

This invention reines t0 `daling ma; chines,' and more particularly `to that type ofV drillingmachine wherein` a plurality o ticular operation to be performedandmay he= adjusted V,to vary `from the operation of ther remaining. spindlesv of the machine 4 .Avfurthery and more `specific object ofy the invention is to providel in i a construction of this characterran arrangement suchgthat adjustment oft the individual spindlesmayl be very readilyl effected and the extent andmovements 'of the work ,table may be very closely regulated.l ,v i Astill .further object-oftheinvention is the productionof an .apparatus of fthis character whichmay bei very-readily and cheapl timing w lyimanufactured, which will'bedurable and eiicient'in service and a fgeneralimprovementin the art. y r c 1 Aurthe-r object `of the inventionwis to providef in a construction oithis` character '35 an"` arrangemenll'-, such y thatregulation of speed ofi individual spindlesl may be very;

conveniently and rapidly,` accomplished.

TheseI andother vobjects'fI attain by the construction shown` in the accompanying 40 drawings whereinsafor the purpose of illustration, Ihave shown alpreferred embodimento'f'lny, invention-and wherein:

Fig. .1 is Aa vertical sectional view `through a drilling machine constructed inl accordance 4'55 with my invention; 1 i l Fig.' 2 is a transverse sectional view* throughthe driving mechanism of the ma chine;`

A Fig.v 3 Ais a portion ofthe machine with the guard.re 50 moved;l l c l y Fig. d isav-iew partially in plan and partially in section ofthe machine;

y Fig. 5fis a side elevation of the `spindle l mounting andthe drive mechanism; i ,55

Fig.v 6 is a detail sectional viewthrough the frame support; and y 1 Fig. 7 lis a detail sectional view through the vjoint of the coolant'deliveringconduit.

, :Referringnowmore :particularly toy the drawings, the numeral 10 ldesignates a sup portingl standard f about which is rotatably mounted in as urrounding relation thereto ag carrier 41l4 l which. engages `the standard "L throughsuitable bearings 1 2 andl. The 65 upper end of standard jl-rotatablysu-pnorts a shaft 14 which may be driven from any; suitable source and wh-ich, through suitableintermediaries 15; and 16 drives shafts 17,l

and 18. Shaft 18 is equipped with apinion` 193 meshing `with a gear 201 mounted upion the upper'end of thencarrier. At its" upper" end the ycarrier rotatablyv supports a gear 21 which `is `arranged iin surrounding jrela-V tion to the carrier and which provides aver` ticallyfelongated face.:V This, gearat\ts up;-` per end has secured thereto va vbevel gear 22 meshing with a pinion* 23 carried lby v shaft' l17.`

The.` carrier'f immediately below Vthe gear` 21y is formed lwithr aV plurality of fvertircally directedV 1 slideways `24KA in which are lmolmted for verticaly sliding-movementgl held againsty rotatiomyslides-25= Eachfslide 25'4 81:5;

has rotatablyL directed therethrough "a ver tically=extending spindle 26 the* 'upper end of Y which has `rotatably mounted thereon a gear .unity comprisingfgears27f and 28;4 of" whichl` gear 327 meshes With` vgear 21.1v The: 9U'

:sideelevation of the loweil Wrench',the vertical position of the slide 25 upper. end of the slide is formed with a flange 29 mounting stud G having a compound gear unit including gears 30 and 31, of which the gear 30 meshes with gear 28 of the spindle shaft 26. Gear 31 meshes with a gear 32 secured to the spindle shaft. The gear units are preferably constructed with jaw clutch elements so that they may be readily interchanged to provide the variation of the transmitted speed iinally derived at the spindle.

The lower end of each slide 25 is likewise flanged as indicated at 33 and has rotatably directed vtherethrough a shaft`34 which has a collar 35 abutting the under surface of the flange 3 3; and .whichA haspthreaded engagement in the slide guide as at 36. The upper end of shaft 34 is, rotatably Vdirected through flange 29 and suitably held against ydownward movement vwith relation to such flange as indicated at 37. The lock nut 38 abutting the slidelguide serves to secure the slide guide after adjustments have been effected. Through rotation of shaft 34, an end of whicliis adapted Vfor reception of4 a may be regulated, this adjustment being rendered possible by the deep face of gear 21.

Mounted in flange 33 and extending through an opening formed in the overhanging portion of the carrierll is a tubular casing v39, the upper `end of which has the bore thereof slightly restricted as indicated at 40.' Slidable in the 'bore is the enlarged lowerend of the outer section 41 of an eX- tensible plunger, a spring 42 surrounding the plunger between the shoulder provided by the'reduction of the bore 40 and the shoulder produced by the enlargement'of such outer section so that the plunger is continually urged downwardly.- The upper end of the plunger, which is slidable in the restricted portion'40 of the bore, has a head or cap 42-a engaging the upper end of the `casing 39 to limit downward movement of the plunger. Y Y

The inner section of the plunger is in the form of a sleeve 43v having a shaft 44 rotatablytdirected therethrough and heldagainst longitudinal movement with relation thereto by`V` means of'collars 45, the lowermost collar `co-acting `with a shoulder formed upon the exterior of the sleeve to maintain the inner section of the plunger against longitudinal movement with relation to a frame-46. 'The' upper end of the shaft is threaded through the cap 42-a and by rotating the shaft which is adapted for the receptionofa wrench 47 the effective length of the plungerand, accordingly, the lowermost positionof the frame 46 with respect to the spindle shaft 26 may be readily determined. f Frame 46 mayl move upwardly against the actionof spring 42 and is adapted for the supportl of lguards land work. guiding devices as illustrated in my prior patents. Frame 46 may be additionally guided by means of studs 48 carried by the slide 25 and more particularly by flange 33 thereof. Slide guide 24 supports, through vertically-extending conduits 49, an annular coolant trough 50 supplied through pipe 51. The lower ends of conduits 49 telescopically receive, through packed joints 52, the upper ends of coolant tubes 53, the lower ends of which discharge at openings 54 provided for the passage of the spindle shafts or drills, reamers or the like carried thereby. 'Y

The lower end of the rotatable carrier embodies any outwardly-extending portion affording beneath each spindle a verticallydirected guide 55 receiving a slide 56, the upperv end'of which .forms a Work support 57. The lower end of each slide 56 has a roller 58 co-acting with a cam 59 carried by an associated shaft 60 which is radial tothe axis of the carrier and has at its inner end a worm gear 61. y The carrierrwithin the enlargement supports vertically-,extending Worm shafts 62 disposed between each pair of the shafts 60 and each having the worm thereof engaged with theworm gears 61 of the associated shafts. Each worm shaft 62 has at its upper end a pinion 63 `meshing with a gear 64 securedto the standard 10 and surrounding same.' Cams 59 alternately raise and lower slides 56 to provide space for the insertion of work and to lbring the Workinto engagement with the drill,`reamer or the like carried by the associated spindle 26.

`It will be obvious that as the carrier and,

gear 21 `are rotated'the spindlesandtheir associated work supports willlbe'carried about the aXis of the carrier and thespindles will be driven'through gear'21 g at a rate determined by the gear train-comprising gears 27, 28, 30, 31'an'd 32; simultaneously, the work carriers/are raisedand 'lowered to bring'the work into engagement with the tools. By adjusting slides 25jthe`eXtent` of engagement mayv be very closelydetermined andthis may be further effected by' alteration or replacement of cams `59. 'The position of the work holding frames 46 and the extent of their cooperationl with the Work holders 57 may be likewise determined by adjustment of the'length of the adjustable plunger. In operation, the speed ofro'-y its manner departing from the spirit of my invention, I do not Wish to be understood as limiting myself thereto except as hereinafter claimed.

I claim: 1. In a multiple-spindle drill, a rotatable carrier, vertically adjustable spindles y mounted in the carrier, a Work sup orting table associated with each spind e and aligned therewith and carried by said carrier, and means operated by rotation of the carrier for reciprocating the Work tables in the general direction of the aXis of the carrier including a gear stationary with relation to the carrier, shafts rotating With the carrier and each having a gear meshing With the stationary gear and a cam for each Work table, said cams being driven by said shafts.

2. In a multiple-spindle drill, a carrier adapted to rotate about an axis, a co-aXial drive gear, a plurality of slides mounted on the carrier, spindles independently adjustable in the slides, gearing connecting each spindle and the first-named gear, means for differentially rotating the'carrier and gear, a frame associated With each spindle and carried thereby and means for independently adjusting the frames', yieldable to permit shifting of the frame in the direction of the axis of the spindle, a Work table associated with each spindle, means for relatively moving the spindles and Work tables to bring Work carried by the table into engagement with tools carried by the spindle, said frame engaging Work carried by the table of the associated spindle prior to engagement of the tool therewith.

JOHN WILSON BROWN, JR. 

